And what a nightmare it was. Installing it on the test forum was a piece of cake, installing it on a "live" forum was very scary, and mistakes were made. Anyway, you should now see an arcade button has joined the list along the top. Click it and have a look. More games will be added as they are tested.
It'll be there now. By default only the admin could see the arcade. Well I suppose that's one way of me keeping the high scores! Also set the arcade so that guests can see the arcade but not play until registered ;D